Malicious PDF — malware analysis report

Static analysis result for SHA-256 5788a2d4bab548a1…

MALICIOUS

PDF

37.2 KB Created: 2021-05-23 21:11:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 803762c30b435e5ecaa765b53daec612 SHA-1: 65cfff73f2acdb4784cf6efd795dddb53c8fad1a SHA-256: 5788a2d4bab548a10967cfc7d4a8d5212d677e0c51268897d0a95a1581aa605a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to malicious redirectors, disguised as game hacks and generators, which are designed to lure users into downloading further malware. The heuristic PDF_GAME_HACK_REDIRECT_LURE and PDF_MALICIOUS_REDIRECTOR_LINK confirm the malicious nature of these links. The ML classifier also flagged the document with high confidence. The document body and embedded links suggest a phishing attempt to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/479516143/how-to-get-minecraft-for-free-on-pc-game-hack In PDF document text
    • http://atmos-service.com/images/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000354f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x354F 26332 bytes
SHA-256: cfa0de1f46aed3670dc37d3db013ffbcf877ff83ceb252f16362be43d73078d4
font_01_sfnt_off00007102.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7102 18028 bytes
SHA-256: b9422edf84f92072c73e95211b34a92c0a0e69f845a714fee2d613fe1b4264b0

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